Page 34 - Innovations in Intelligent Machines
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22 M.L. Cummings et al.
20 No Wait Times
Maximum Number of Vehicles 15 Wait Times
10
0 5 Baseline of 4 UAVs
Manual Passive Active Super Active
Level of Automation
Fig. 5. Low Workload Operator Capacity Prediction
12 No Wait Times
Maximum Number of Vehicles 8 6 4 Baseline of 4 UAVs Wait Times
10
0 2
Manual Passive Active Super Active
Level of Automation
Fig. 6. High Workload Operator Capacity Predictions
Low Workload Predictions. Under the low workload condition, three impor-
tant trends should be noted. Under the lower levels of automation for both
the original and revised fan-out equations, operator capacity was essentially
flat, and a significant increase was not seen until the use of a higher automa-
tion strategy, management-by-exception, was implemented. It is important to
remember that the metric is time and not overall decision quality or perfor-
mance. However, independent performance measures indicated that at the low
workload level, operators were able to effectively control all four vehicles [16].
